CN108140748A - Button cell based on lithium ion - Google Patents

Button cell based on lithium ion Download PDF

Info

Publication number
CN108140748A
CN108140748A CN201680057425.3A CN201680057425A CN108140748A CN 108140748 A CN108140748 A CN 108140748A CN 201680057425 A CN201680057425 A CN 201680057425A CN 108140748 A CN108140748 A CN 108140748A
Authority
CN
China
Prior art keywords
half portion
shell half
button cell
shell
polarization
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201680057425.3A
Other languages
Chinese (zh)
Inventor
H.西韦克
B.克赖德勒
G.基利巴尔达
W.高格勒
C-C.菲舍尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VARTA Microbattery GmbH
Original Assignee
VARTA Microbattery GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VARTA Microbattery GmbH filed Critical VARTA Microbattery GmbH
Publication of CN108140748A publication Critical patent/CN108140748A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0422—Cells or battery with cylindrical casing
    • H01M10/0427—Button cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/661—Metal or alloys, e.g. alloy coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/661—Metal or alloys, e.g. alloy coatings
    • H01M4/662—Alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/80—Porous plates, e.g. sintered carriers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/80—Porous plates, e.g. sintered carriers
    • H01M4/806—Nonwoven fibrous fabric containing only fibres
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/80—Porous plates, e.g. sintered carriers
    • H01M4/808—Foamed, spongy materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/109—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure of button or coin shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/545—Terminals formed by the casing of the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/021—Physical characteristics, e.g. porosity, surface area
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/028—Positive electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

Button cell based on lithium ion, including the shell closed in fluid-tight manner, which is made of the shell half portion of metal and the shell half portion of metal of negative polarization of positive polarization, and shell half portion is separated from each other by the sealing element of electrical isolation.Positive electrode and negative electrode are arranged inside the shell.The shell half portion of positive electrode and positive polarization is in electrical contact, and the shell half portion of negative electrode and negative polarization is in electrical contact.The partition board of ionic conduction is arranged between the electrodes.Positive electrode includes the collector of metal.Porous engineering three-dimensional tissue structures are used as such collector, and hole is filled with the active material of suitable electrochemistry.In the manufacturing process of button cell, institutional framework is connect by welding with the shell half portion of positive polarization.

Description

Button cell based on lithium ion
Technical field
The present invention relates to the button cells based on lithium ion.
Background technology
The chemical reaction of production capacity occurs during the electric discharge of electrochemical cell, the chemical reaction is electric mutually by two Couple partial reaction composition still spatially separated from each other.In the portion that relatively low redox potential occurs Point reaction carried out on negative electrode, in the case that the partial reaction that relatively high redox potential occurs on the positive electrode into Row.Electronics is discharged by oxidation process on negative electrode in discharge process, electron stream is caused to be come by external electrical appliance Positive electrode is received the electronics of corresponding quantity by positive electrode.Reduction process therefore occurs on the positive electrode.It is sent out in battery simultaneously The raw ion stream corresponding to electrode reaction.This ion stream is ensured by the electrolyte of ionic conduction.This is put in secondary battery Electricity reaction is reversible, therefore there is a possibility that as follows：The conversion of the chemical energy carried out under discharge scenario to electric flux is inverse Turn.If term is used in this connection：Anode and cathode then usually correspondingly name electrode and its discharging function.Negative electrode It that is to say anode in this battery, positive electrode is cathode.
The especially known embodiment of electrochemical cell is button cell.Button cell usually has by positive polarization and bears The cylindrical shell of polarized metal shell half portion composition, height are less than its diameter.It can include in the shell different Electro-chemical systems.Button cell based on nickel-metal hydrides system and based on lithium ion is very universal.These batteries usually may be used To charge again.
First, the button cell based on lithium ion has very high energy density.Under these cell conditions, mentioning Charging and discharging process range in lithium ion is made to account for into electrode or be transferred out of from electrode.Button cell based on lithium ion is real Existing very high current load ability, the traditional grounding electrode of substitution include the heap by multiple flat battery compositions（stack （It stacks））The complex of form or the battery for alternatively including coiling form.However by multiple flat battery compositions The formation of heap is complicated, because battery must be interconnected in a manner of cross-layer.In addition to this, corresponding electrical contact needs sky Between and produce dead volume, this reduces the energy density of corresponding battery.
Such as exist in 10 2,009 060 800 A1 of DE with showing with the button cell of the battery of coiling form Example.Battery in the form of cylindrical winding is described in this application.Conductive bar is protruded from the end face of winding, with metal shell It is conductively connected.However this winding can only smoothly be manufactured from specific minimum thickness.Winding with the thickness less than 5mm Manufacture be difficult.It in addition to this, can only will be this thin around being assembled into conventional battery case in a manner of difficult.
Therefore, the button cell with the small structure height of high conductive capability and≤5mm is almost not available.
Invention content
The task of the present invention is based on, and the button cell of the structure height with≤5mm is provided, with high energy density And high electric current can be released.
These tasks pass through the button cell of the feature with claim 1 and the side of the feature with claim 9 Method is addressed.The preferred embodiment of button cell according to the present invention illustrates in dependent claims 2 to 8.According to The preferred embodiment of the method for the present invention illustrates in dependent claims 10 to 13.The term of whole claims is herein With reference to the content of following description.
Button cell according to the present invention is the button cell based on lithium ion.It is told about unanimously with above, it means that： Button cell has following electrode, and in these electrodes, lithium ion is accounted for into and is transferred out of during charging and discharging.Button electricity Pond includes always：
The shell closed in a manner of liquid-tight, the shell by positive polarization metal shell half portion and negative polarization metal it is outer Shell half portion forms, these shell half portions are separated from each other by the sealing element of electrical isolation,
The positive electrode that arrangement is in electrical contact inside the shell and with the shell half portion of positive polarization,
Negative electrode that arrangement is in electrical contact inside the shell and with the shell half portion of negative polarization and
The partition board of ionic conduction, the partition board are arranged between positive electrode and negative electrode in the shell.
The feature of button cell according to the present invention is particularly：
Positive electrode includes the collector of metal,
The collector of metal is porous engineering three-dimensional tissue structures,
The hole of porous institutional framework filled with positive electrode electrochemistry active material and
Porous institutional framework is connect by welding with the shell half portion of positive polarization.
Infrequently introduce in classical button cell and in button cell shell individual collector.In general, button The shell half portion of battery case and the active material of electrochemistry are in direct contact and itself function as collector.
It is realized by using by the porous three-dimensional collector that welding is connect with positive shell half portion to claimed The surprising of electric conductivity of button cell be obviously improved.It is thus caused to speculate this：In the hole of three-dimensional collector The active material of electrochemistry of positive electrode averagely upper have to the interval being obviously shortened of collector.Due to the company of this shortening It connects, can realize electrical or ion the diffusion path of shortening, thus significantly improve the conductivity of positive electrode.
Also make electrode mechanically stable by collector in addition.This is using the active material with the high absorbent capacity for lithium It particularly works in the case of material：The each of lithium is absorbed or discharges all with the volume change of the active material particle participated in Change.This continual mechanical load leads to degradation phenomena, this shows that battery capacity declines.And porous three-dimensional collector Use then work in contrast.
Another advantage is obtained from this：It is directly connected on shell by welding by three-dimensional and porous current collector.Thus It can exclude due to loss caused by bad contact.
It is particularly preferred that engineering three-dimensional tissue structures are by the metal foam or metal non-woven material of trepanning or by tinsel The fabric or felt of composition are formed.Alternatively, which can also be net or grid, when necessary with multi-tier arrangement.
As the application of conductor, from the metal foam and non-woven material of suitable trepanning known in the art.With regard to this By, such as with reference to 0 658 949 A1 of EP, described in suitable metal foam and non-woven material.Metal grate and net are made It is equally known for the conductor in battery pack range.Such as 198 57 638 A1 of DE are referred in this connection.It is for example, suitable Net or grid be metal lath.Metal lath is thin metal tape or metal foil, the first notch equipped with multiple interruptions, Next to extend transverse to the longitudinal direction of the notch, that is, extend, this causes the metal tape before between notch to prolong It is stretched into grating texture.
When the hole for referring to porous institutional framework within the scope of this invention, then it also is understood as, in grid or net Item（Stege）Between or the fiber of non-woven material between existing gap.Correspondingly, the porosity Ying Chun of institutional framework Essence is interpreted as, in the total volume of holes all included in the institutional framework and/or the cavity volume and institutional framework in gap Ratio.
It is particularly preferred that institutional framework has the hole in the range of 20% to 99%, in the range of especially 80% to 98% Degree.In a preferred embodiment, hole and/or gap have in the range of 10 μm to 1500 μm, and particularly preferred 10 μm extremely In the range of 1000 μm, the maximum gauge especially in the range of 10 μm to 250 μm.
The foam and non-woven material being not only previously mentioned, and grid and metal mesh usually can be used as band or sheet material obtains It arrives.Such as by program is stamped or cut out, the knot of tissue needed for button cell according to the present invention can be separated from these materials Structure.
It is particularly preferred that the institutional framework being achieved in that has the shape of cylindrical disk, especially have in 3mm extremely In the range of 100mm, the shape of the disk of the diameter preferably in the range of 3mm to 30mm.The thickness of disk is preferably placed at 20 μm extremely In the range of 10mm, and 20 μm are preferably placed in the range of 5mm.In the range, range of the thickness at 50 μm to 5mm It is interior, preferably in the range of 100 μm to 5mm, particularly preferably in the range of 100 μm to 4mm, especially at 100 μm to 3mm In the range of.The size of institutional framework and the size of the shell of button cell according to the present invention are mutually coordinated.
According to specifically preferred according to the invention, porous institutional framework is made of aluminum or aluminum alloy.
The shell of button cell according to the present invention can be equally made of aluminum or aluminum alloy.It can also but seem It is made of steel plate or iron plate or including at least the layer being made of steel plate or iron plate.It is particularly preferred that the shell half portion of positive polarization It is formed by aluminium or by aluminium alloy, and the shell half portion of negative polarization is then made of steel plate or iron plate or comprising at least one by this way Material composition layer.
Preferably, positive polarization and the shell half portion of negative polarization be connected with each other in form-fit fashion and need cathode The deformation of the shell half portion of change, so that two shell half portions are separated from each other.
In particularly preferred embodiments, two shell half portions construct cup-shapeds and are respectively provided with：It is bottom of a cup, circular Wall of cup has at the cup edge of the trimming of end and by this glass of edge limited opening.
Preferably, porous institutional framework flatly and be directly placed in positive polarization shell half portion bottom of a cup on simultaneously And it is directly welded with the bottom of a cup of the shell half portion of positive polarization.
In preferred embodiment（Variant scheme A）In, the size of two shell half portions is mutually coordinated in this way so that shell half One of portion（Insertion portion）It can be advanced through being inserted by the opening that the cup edge of another shell half portion is limited with cup edge Another shell half portion（Receiving portion）In.In order to realize the connection of shape cooperation, insertion portion can be inserted forward with cup edge Enter into receiving portion, wherein suitable sealing element to be preferably applied to the outside of the wall of cup of insertion portion before insertion. Later, the cup edge of receiving portion is radially-inwardly squeezed or shunk, until generating desired shape cooperation.By this program Commonly referred to as flange.
In another preferred embodiment（Variant scheme B）In, the connection of shape cooperation is implemented as described below：Using being configured to The shell half portion of cupuliform, with bottom of a cup, circular wall of cup, the cup edge with the trimming in end and by cup it is edge limited Opening.In the first step, the cup edge of shell half portion is bend radially outward, particularly so that the edge of bending takes and ring Around wall of cup 90 ° of angle.As a result, the shell half portion deformed in this way has hat-shaped cross section, wherein the edge being bent forms cap Eaves.Then shell half portion is onwards put into the centre for the disk being for example made of steel plate or iron plate with side eaves, it should by deformation Disk is processed into the shell half portion of bowl-type.For this purpose, the edge of disk is radially-inwardly on the cup edge of the bending of the shell half portion of cupuliform Fold, so as to form circular flange.In this lip, the cup edge U-shaped of the bending of the shell half portion of cupuliform by bowl-type The surrounded by edges of the bending of shell half portion.Preferably, before being put on disk, suitable sealing element is applied to the shell of cupuliform On the cup edge of the bending of half portion.
Preferably, the shell of button cell according to the present invention include two circles or ellipse, it is spaced and The outer casing bottom of plane parallel to each other and the casing by the annular of outer casing bottom connection.Wherein each outer casing bottom has It is directed toward the inside of the inner space of shell and outside directed in opposite directions.In the embodiment according to variant scheme A, shell Bottom is made of the bottom of a cup of two cupuliform shell half portions.In the embodiment according to variant scheme B, outer casing bottom by cupuliform outside The bottom of a cup portion of shell half portion and disk are formed.
Button cell according to the present invention preferably has≤5mm, the height of especially≤4mm.Height is particularly preferably in 2mm To 5mm, particularly preferred 2mm to 4mm.Height preferably corresponds to the mutually flat of button cell according to the present invention herein The shortest distance between the outside of the outer casing bottom of capable plane.
In the preferred embodiment of button cell according to the present invention, the negative electrode of button cell according to the present invention Collector including metal, the collector being particularly made of copper or copper alloy are electrically connected with the shell half portion of negative polarization.Collection Fluid is preferably also the metal foam or metal non-woven material or the fabric or felt that are made of tinsel by trepanning The engineering three-dimensional tissue structures formed；Either net or grid, when necessary in a manner of multi-tier arrangement.
In a preferred embodiment, for the collector of the metal of negative electrode again by welding and cage connection, more Specifically, it is connect with the shell half portion of negative polarization.In a preferred embodiment, structural property and the afflux for positive electrode The structural property of body is identical.
Button cell according to the present invention preferably has the shell closed in a manner of liquid-tight.This means that in normal operation Middle liquid can neither be flowed out from shell to be penetrated into shell.
In order to manufacture button cell according to the present invention, method as described below can be utilized.This method always include with Lower step：
Positive electrode is provided in the shell half portion of positive polarization,
Negative electrode is provided in the shell half portion of negative polarization,
The sealing element of electrical isolation is provided,
There is provided ionic conduction partition board and
By these Component compositions into button cell to be manufactured.
It is characterized in that according to the method for the present invention, positive electrode is by the metal in the form of porous engineering three-dimensional tissue structures The shell half portion of collector and positive polarization connects and this collector is connect by welding with the shell half portion of positive polarization.
It is particularly preferred that it is welded by resistance welding or by laser.Such as from 10 2,009 060 800 A1 of DE In it is known：It is used to weld the conductor of button cell shell and metal using laser.Described behavior also may be used in principle To use within the scope of this invention.It contacts with each other in two metallic substrates of resistance welding.Then two electrodes are applied Add in the contact areas, electric current flows between these electrodes, and electric current causes substrate in the contact areas to melt.This forms phase The solder joint or weld seam answered.
In button cell to be manufactured, porous engineering three-dimensional tissue structures are a parts for positive electrode.It is preferably herein It is covered by the active material of positive electrode.Especially, hole is completely or at least partially filled with active material.
In order to provide positive electrode in the shell half portion of positive polarization, the active material of suitable electrochemistry is introduced into the group It knits in structure.This after the welding of the shell half portion of positive polarization preferably in porous institutional framework with carrying out.The work of electrochemistry Property material can be in a dry form introduced in porous institutional framework.But alternatively it is also possible that：By electrochemistry Active material be introduced into the form of suspension in porous institutional framework.In the latter case, after introduction usually It must be driven off suspension media.It thus when necessary can be with the institutional framework of heated porous.
In order to provide negative electrode, in the simplest case, the lithium of metal can be pressed into suitable shell half portion. But it is also possible that：It is carried out in a manner of being similar to and positive electrode is provided, that is, provide such as lower casing half portion, the shell half portion With being welded on therein, as collector, metal, porous institutional framework, and by the active material of electrochemistry with Dried forms are introduced into the form of suspension in the porous institutional framework.
In the case where manufacturing button cell according to the present invention, however, it would be possible to use all to absorb and again Release active material of the material of lithium ion as electrochemistry.In this regard, for positive electrode, the prior art especially lithium metal aoxidizes Object, such as cobalt acid lithium（LiCoO2）, LiFePO4（LiFePO4）, LiMn2O4（LiMn2O4）Such as LiNi1 / 3Mn1 / 3Co1 / 3O2Or LiMnPO4.For negative electrode, the active material used in the industry at present is also outstanding other than mentioning lithium metal It includes carbon-based particles, such as graphitic carbon or the non-graphitic carbon material that can be embedded in lithium.Further, it is also possible to use metal or half gold The material of category, can be with lithium alloyage or composition intermetallic phase.Suitable metal is, for example, element tin, antimony and silicon.All electricity Chemistry active material usually in granular form using and be also comprised in electrode in this form.
Other than the active material being previously mentioned, not only positive electrode but also negative electrode can also include electrochemically inactive group Point.Especially include electrode adhesive thus and influence the additive of conductivity.The machinery that electrode adhesive is generally responsible for electrode is steady It is qualitative.Because the function is at least undertaken on positive electrode side by porous institutional framework within the scope of this invention, in this hair Electrode adhesive can be abandoned in bright several embodiments.Similarly, in several embodiments, the influence being previously mentioned is conductive The additive of rate is not mandatory needs, because the institutional framework forms conducting base, the conducting base is at least in certain portions Divide the function of also taking on classical conductive agent.As long as the electrode of button cell according to the present invention includes conductive agent, thus with regard to example Such as it is contemplated that carbon black or graphite.Consider such as carboxymethyl cellulose and fluorinated polymer, such as polyvinylidene fluoride as electricity Very viscous mixture.
As the sealing element of electrical isolation, for button cell according to the present invention be especially suitable for classical molded seals with And the known membrane seal from 196 47 593 A1 of DE.
As the partition board for being capable of ionic conduction, for button cell according to the present invention, consider it is for example porous, with electrolysis The plastic foil of matter dipping, such as by polyolefin or the perforated membrane being made of polyether-ketone.It can also use and be made of polyolefine fiber Non-woven material.
Before the shell seal of button cell according to the present invention, lead to common electrolyte filling electrode.Common electrolysis Matter solution is, for example, lithium salt solution, lithium hexafluoro phosphate such as in organic solvent, and organic solvent is, for example, ether or carbonic ester.
Description of the drawings
Be previously mentioned and other advantages of the present invention especially attached drawing being described below from combination described embodiment In obtain.The preferred embodiment being described below is served only for illustrating and the present invention is best understood from and in any feelings It all should not be restrictively understood under condition.
Specific embodiment
Be shown in FIG. 1 for provide positive polarization shell half portion 101 preferred behavior, which has The positive electrode 102 included wherein（Schematic diagram, all components are represented with cross section）.
In step 1, the disk 103 being made of aluminum foam is provided.Thus by corresponding band punching press placing 103.In step 2 In, disk 103 is pressed into the shell half portion 101 for the cupuliform being made of aluminium so that its plane earth lies in the bottom of shell half portion 101 On portion 101a.Then apply electrode at two point 104a and 104b on the outside of bottom 101a, voltage is applied to these Electrode.Since voltage causes in the contact areas：The inside of aluminum foam and bottom 101a fuses.It in step 3, will be by N- methyl Pyrrolidones（NMP）Or N- ethyl pyrrolidones（NEP）With lithium metal oxide contained therein（Active electrode material）Composition Suspension be introduced in the hole of aluminum foam.Then organic solvent is removed.By punch（It is not shown）It can will be by metal foam The compound calendering of foam and active electrode material composition.
In a subsequent step, the shell half portion 101 of the positive polarization provided in step 3 is together with electric included in it Pole 102 is combined with the shell half portion 105 of the negative polarization of cupuliform, wherein arranging negative electricity in the shell half portion of the negative polarization of the cupuliform Pole 106.The embodiment obtained in this way of button cell 100 according to the present invention is shown in FIG. 2（Equally it is schematical horizontal stroke Sectional view）.
As negative electrode 106, the lithium of metal can be pressed into shell half portion 105.However being shown in FIG. 2 can replace The variant scheme in generation.Shown electrode 105 is substantially by that can be embedded in the material of lithium, such as graphitic carbon forms.In 102 He of electrode The partition board 107 being made of polyolefin is arranged between 105.It is soaked as positive electrode 102 and negative electrode 106 with electrolyte solution Stain.
The shell half portion 105 of negative polarization is inserted into the shell half portion 101 of positive polarization.Shell is closed by flange.

Claims (13)

1. the button cell based on lithium ion, the button cell includes：
The shell closed in a manner of liquid-tight, the shell is by the shell half portion of metal of positive polarization and the metal of negative polarization Shell half portion forms, and the shell half portion is separated from each other by the sealing element of electrical isolation,
The positive electrode for being arranged in the shell and being in electrical contact with the shell half portion of the positive polarization,
The negative electrode that is arranged in the shell and is in electrical contact with the shell half portion of the negative polarization and
The partition board of ionic conduction, the partition board are disposed in the housing between the positive electrode and the negative electrode,
Wherein
The positive electrode includes the collector of metal,
The collector of the metal is engineering three-dimensional tissue structures with hole,
The hole of the porous institutional framework filled with the positive electrode electrochemistry active material and
The porous institutional framework is connect by welding with the shell half portion of the positive polarization.
2. button cell described in accordance with the claim 1, which is characterized in that foam of the institutional framework by trepanning, non-thermoplastic Material, grid or net are formed.
3. according to the button cell described in claim 1 or claim 2, which is characterized in that the institutional framework has 20% Porosity in the range of to 99%.
4. according to the button cell described in one of the claims, which is characterized in that the porous institutional framework has circle The shape of the disk of cylindricality especially has between the diameter in the range between 3mm to 100mm and 20 μm to 10mm Thickness disk shape.
5. according to the button cell described in one of the claims, which is characterized in that
The porous institutional framework
And/or
The shell half portion of the positive polarization
It is formed by aluminium or by aluminium alloy or steel plate or iron plate
And/or
The shell half portion of the negative polarization is made of steel plate or iron plate or is made of including at least one steel plate or iron plate Layer.
6. according to the button cell described in one of the claims, which is characterized in that the shell half portion of the positive polarization and institute State negative polarization shell half portion be shape-ordinatedly connected with each other and need the negative polarization shell half portion deformation, so as to will Two shell half portions are separated from each other.
7. according to the button cell described in one of the claims, which is characterized in that the negative electrode includes the afflux of metal Body, the collector of the metal are especially formed by copper or by copper alloy.
8. according to the button cell described in claim 7, which is characterized in that for the collector of the metal of the negative electrode
It is connect by welding with the shell half portion of the negative polarization
And/or
With the architectural characteristic identical with the collector for the positive electrode.
9. for manufacturing with the button cell of shell closed in a manner of liquid-tight, especially according to one of the claims The method of the button cell, it is characterised in that following steps：
Positive electrode is provided in the shell half portion of positive polarization,
Negative electrode is provided in the shell half portion of negative polarization,
The sealing element of electrical isolation is provided,
There is provided ionic conduction partition board and
By Component composition into the button cell to be manufactured,
It is characterized in that,
The positive electrode is by the collector of the metal in the form of porous engineering three-dimensional tissue structures and the shell half of the positive polarization Portion connects and the collector is connect by welding with the shell half portion of the positive polarization.
10. according to the method for claim 9, which is characterized in that the welding is held by resistance welding or by laser Row.
11. according to claim 9 or method according to any one of claims 10, which is characterized in that in order to perform the welding, make described Porous institutional framework and the shell half portion Mechanical Contact, and by applying voltage in the contact areas to the shell half The welding is performed in portion.
12. according to the method described in one of claim 9 to 11, which is characterized in that especially in the porous institutional framework It is described porous by the way that the active material of suitable electrochemistry is introduced into after being welded with the shell half portion of the positive polarization Institutional framework in manufacture the positive electrode.
13. according to the method for claim 12, which is characterized in that
The active material of the electrochemistry is introduced into a dry form in the porous institutional framework,
Or
The active material of the electrochemistry is introduced into the form of suspension in the porous institutional framework.
CN201680057425.3A 2015-10-02 2016-09-02 Button cell based on lithium ion Pending CN108140748A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP15188137.2 2015-10-02
EP15188137.2A EP3151304B1 (en) 2015-10-02 2015-10-02 Button cell on a lithium ion basis
PCT/EP2016/070773 WO2017055011A1 (en) 2015-10-02 2016-09-02 Button cell on lithium-ion basis

Publications (1)

Publication Number Publication Date
CN108140748A true CN108140748A (en) 2018-06-08

Family

ID=54252183

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201680057425.3A Pending CN108140748A (en) 2015-10-02 2016-09-02 Button cell based on lithium ion

Country Status (4)

Country Link
US (1) US20180254439A1 (en)
EP (1) EP3151304B1 (en)
CN (1) CN108140748A (en)
WO (1) WO2017055011A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114639901A (en) * 2020-12-15 2022-06-17 雷纳塔股份公司 Holder for button cell electrode and cell provided with such a holder

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210288364A1 (en) * 2017-10-13 2021-09-16 Wayne State University Fabrication of micro/millimeter-scale power sources and the process flow therefor
CN113013527B (en) * 2021-02-25 2022-10-14 东莞小锂新能源科技有限公司 Novel button battery and manufacturing and mounting method of shell sealing element structure
US20220352496A1 (en) * 2021-04-28 2022-11-03 GM Global Technology Operations LLC Method and apparatus for fabricating an electrode for a battery

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5795680A (en) * 1995-11-30 1998-08-18 Asahi Glass Company Ltd. Non-aqueous electrolyte type secondary battery
CN1264185A (en) * 1998-12-14 2000-08-23 瓦尔达设备电池股份有限公司 Button-shaped storage battery
EP2690687A1 (en) * 2012-07-26 2014-01-29 VARTA Microbattery GmbH Button cell with anode coil and method for its production
CN104620412A (en) * 2012-09-11 2015-05-13 儒特杰德公司 Stacked type secondary battery

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4343435A1 (en) 1993-12-18 1995-06-22 Varta Batterie Gas-tight sealed alkaline battery in the form of a button cell
DE19647593B4 (en) 1996-11-18 2012-06-21 Varta Microbattery Gmbh Method for producing a button cell
US7622226B2 (en) * 2004-11-04 2009-11-24 Panasonic Corporation Secondary battery having a terminal for surface mounting
DE102009060800A1 (en) 2009-06-18 2011-06-09 Varta Microbattery Gmbh Button cell with winding electrode and method for its production
JP2012186143A (en) * 2011-02-18 2012-09-27 Sumitomo Electric Ind Ltd Electrode for electrochemical element, and method for manufacturing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5795680A (en) * 1995-11-30 1998-08-18 Asahi Glass Company Ltd. Non-aqueous electrolyte type secondary battery
CN1264185A (en) * 1998-12-14 2000-08-23 瓦尔达设备电池股份有限公司 Button-shaped storage battery
EP2690687A1 (en) * 2012-07-26 2014-01-29 VARTA Microbattery GmbH Button cell with anode coil and method for its production
CN104620412A (en) * 2012-09-11 2015-05-13 儒特杰德公司 Stacked type secondary battery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114639901A (en) * 2020-12-15 2022-06-17 雷纳塔股份公司 Holder for button cell electrode and cell provided with such a holder

Also Published As

Publication number Publication date
EP3151304A1 (en) 2017-04-05
US20180254439A1 (en) 2018-09-06
EP3151304B1 (en) 2018-07-25
WO2017055011A1 (en) 2017-04-06

Similar Documents

Publication Publication Date Title
US8900746B2 (en) Aqueous secondary battery
KR100782993B1 (en) Secondary battery
WO2010061451A1 (en) Air secondary battery
CN109119667A (en) Rectangular secondary cell
JP2010073533A (en) Chargeable and dischargeable battery
CN107305942B (en) Winding type negative plate, battery cell with same and lithium slurry battery
CN102696144A (en) Power storage device cell, manufacturing method therefor, and electricity storage device
CN108140748A (en) Button cell based on lithium ion
KR102593751B1 (en) Ultra-stable rechargeable manganese battery with solid-liquid-gas reaction
CN105826558A (en) Flexible wearable water system lithium ion battery
US8822071B2 (en) Active material for rechargeable battery
JP2015530707A (en) Alkaline battery with increased interfacial area
JP2012138408A (en) Electrochemical device and manufacturing method thereof
CN105449166A (en) Manufacturing method for negative electrode pole piece for sodium ion battery
KR101028657B1 (en) Lithium powder and silicon oxide double layer anode, method of manufacturing the anode and lithium secondary battery using the anode
CN108666630A (en) The manufacturing method of rectangular secondary cell
JP5395350B2 (en) Sheet-like negative electrode for lithium ion secondary battery and lithium ion secondary battery using the same
CN114024037A (en) Solid-state battery cell, preparation method thereof and energy storage device
JP6662353B2 (en) Negative electrode current collector, negative electrode, and aqueous lithium ion secondary battery
WO2017187888A1 (en) Negative electrode composite structure for lithium air batteries
CN101110472A (en) Lithium ion battery cover plate and lithium ion battery or battery set using the cover plate
KR20130111988A (en) Air battery and electronic device
JP5050346B2 (en) Water-based lithium secondary battery
JP2015011915A (en) Air cell and method for manufacturing the same
CN207765561U (en) A kind of coiled lithium ion battery

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20180608